Question about 2000 Chevrolet Malibu

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Radiator water light on but there is fluid in reservoir

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Sounds like your car has a coolant level sensor that is bad. not sure where it is on your car. is usually a good place to find info on changing stuff like that.

Posted on Apr 06, 2011


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Oil in the radiator overflow reservoir

If it is engine oil, you could have a leaking head gasket or intake gasket. If its trans fluid, you could have a leak inside the radiator.

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If the reservoir tank is filled with coolant, it is necessary also to fill up the radiator with water or coolant?

Depends. Not usually because as engine heats and then cools when shutoff, reservoir should allow radiator to suck back what it needs. However, if you have just flushed system, or replaced water pump, you should fill at radiator as well. Bad radiator cap that prevents backflow can cause problems as well.

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Chevrolet Blazer overheating, misfiring, and temp gauge jumping around

Look at the area where you park. Is there any fluid under the car that is not oily but rather is slick and has a sweet smell - yes, you wil have to stick your finger in it to see. If you find this type of fluid, you have a leak from somewhere in the engine compartment. Judge by the amount of fluid whether this is a major and potential calamity. (Lots of antifreeze could mean a bad hose or a bad water pump.)

Once you've checked for leaks, check the plastic reservoir that holds the radiator coolant overflow - is there anything in it? If you found alot of fluid on the ground, odds are that the reservoir will be low. If it is much below the fill line, add some water and coolant (50/50 mix) until it is back to the fill line.and check it for awhile to see if it needs more after you have driven for a bit (keep the coolant with you in the car just in case.) When the engine is cold, and as you are checking the reservoir, remove the radiator cap by pushing down on it a bit and turning it in the direction shown on the cap itself. Look into the radiator with a flashlight to see where the fluid level is. If it is more than 2 inches from the top, add a bit of coolant/water but not up to the top. Replace the cap firmly and add coolant/water to the reservoir cold level mark.
If that all looks fine, you may have a bad water pump, a plugged radiator, a week cooling fan or a bad thermostat.

Good luck.

Apr 18, 2013 | 2000 Chevrolet Blazer

1 Answer

1995 Mercury Mystique Raditor Resorer light is on but is full. Sensor not working. How to test?

Are you sure that the light that is on is for the Reservoir and not for the radiator itself? Your light might be indicating that the radiator is out of water or overheating. Or is it just simply the light for your windshield washer fluid and you might be looking at the wrong reservoir under the hood. You might try unplugging the sensor to see if a change of state effects the dash light. then plug it back in and check it. Good Luck!!

Jun 11, 2012 | 1995 Mercury Mystique

1 Answer

I was driving and it just died

If you lost all power...lights etc. could be alternator or timing belt/chain. Also check fluid level in radiator reservoir, water pump may have frozen up and leaked all fluid out. Lots of possibilities. Did you notice anything different before it died? Hesitation, odd lights on instrument panel lighting up?

Jan 04, 2011 | 2000 Chevrolet Blazer

1 Answer

The fluid level light keeps coming on. Doesn't need a water pump, already checked. Replaced a cracked reservoir. Hoses okay. Smell antifreeze after driving. Also, CO2 sensor ok. Churns when...

Hi Karen
The problem here could be that you may have a leak in your coolant reservoir. Especially if you can smell antifreeze (coolant) after driving it could be that some of the hoses may be plugged depending on age and when the radiator is trying to feed the fluid back into the reservoir it cant this can also impact the levels sensor.
Have the hoses checked as well as the coolant reservoir and check for fluids/moisture around the bottom of your radiator. It commonly is collecting around that area when you have a feedback issue.

Oct 11, 2010 | 1998 Oldsmobile Intrigue

1 Answer

1994 pontiac grand am.. warning light for low fluid levels comes on even though there is lots of water in the radiator.

sounds like coolant sensor needs to be replaced it should be located in radiator reservoir

Mar 14, 2010 | 1994 Pontiac Grand Am

2 Answers

I cannot seem to locate the radiator and where I can put water in. Someone help!

The radiator is that flat panel shaped object in the front-most center of the engine compartment. You don't add coolant and water directly into the radiator. On the right side of the engine compartment is a plastic overflow reservoir with a blue cap. That's where the coolant/water mix goes. Run the engine while adding coolant and water. There are fill marks on the reservoir indicating how much coolant/water mix is required. With the engine running, if the radiator is very low on coolant it will repeatedly draw fluid from the reservoir. Continue to add coolant/water mix until the situation stabilizes and the reservoir is filled to the high fill mark.

Oct 22, 2009 | 2000 Daewoo Leganza

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